sound/core/Kconfig

   1 # ALSA soundcard-configuration
   2 config SND_TIMER
   3         tristate
   4
   5 config SND_PCM
   6         tristate
   7         select SND_TIMER if SND_PCM_TIMER
   8
   9 config SND_PCM_ELD
  10         bool
  11
  12 config SND_PCM_IEC958
  13         bool
  14
  15 config SND_DMAENGINE_PCM
  16         tristate
  17
  18 config SND_HWDEP
  19         tristate
  20
  21 config SND_SEQ_DEVICE
  22         tristate
  23
  24 config SND_RAWMIDI
  25         tristate
  26         select SND_SEQ_DEVICE if SND_SEQUENCER != n
  27
  28 config SND_COMPRESS_OFFLOAD
  29         tristate
  30
  31 config SND_JACK
  32         bool
  33
  34 # enable input device support in jack layer
  35 config SND_JACK_INPUT_DEV
  36         bool
  37         depends on SND_JACK
  38         default y if INPUT=y || INPUT=SND
  39
  40 config SND_OSSEMUL
  41         bool "Enable OSS Emulation"
  42         select SOUND_OSS_CORE
  43         help
  44           This option enables the build of OSS emulation layer.
  45
  46 config SND_MIXER_OSS
  47         tristate "OSS Mixer API"
  48         depends on SND_OSSEMUL
  49         help
  50           To enable OSS mixer API emulation (/dev/mixer*), say Y here
  51           and read <file:Documentation/sound/alsa/OSS-Emulation.txt>.
  52
  53           Many programs still use the OSS API, so say Y.
  54
  55           To compile this driver as a module, choose M here: the module
  56           will be called snd-mixer-oss.
  57
  58 config SND_PCM_OSS
  59         tristate "OSS PCM (digital audio) API"
  60         depends on SND_OSSEMUL
  61         select SND_PCM
  62         help
  63           To enable OSS digital audio (PCM) emulation (/dev/dsp*), say Y
  64           here and read <file:Documentation/sound/alsa/OSS-Emulation.txt>.
  65
  66           Many programs still use the OSS API, so say Y.
  67
  68           To compile this driver as a module, choose M here: the module
  69           will be called snd-pcm-oss.
  70
  71 config SND_PCM_OSS_PLUGINS
  72         bool "OSS PCM (digital audio) API - Include plugin system"
  73         depends on SND_PCM_OSS
  74         default y
  75         help
  76           If you disable this option, the ALSA's OSS PCM API will not
  77           support conversion of channels, formats and rates. It will
  78           behave like most of new OSS/Free drivers in 2.4/2.6 kernels.
  79
  80 config SND_PCM_TIMER
  81         bool "PCM timer interface" if EXPERT
  82         default y
  83         help
  84           If you disable this option, pcm timer will be unavailable, so
  85           those stubs that use pcm timer (e.g. dmix, dsnoop & co) may work
  86           incorrectlly.
  87
  88           For some embedded devices, we may disable it to reduce memory
  89           footprint, about 20KB on x86_64 platform.
  90
  91 config SND_HRTIMER
  92         tristate "HR-timer backend support"
  93         depends on HIGH_RES_TIMERS
  94         select SND_TIMER
  95         help
  96           Say Y here to enable HR-timer backend for ALSA timer.  ALSA uses
  97           the hrtimer as a precise timing source. The ALSA sequencer code
  98           also can use this timing source.
  99
 100           To compile this driver as a module, choose M here: the module
 101           will be called snd-hrtimer.
 102
 103 config SND_DYNAMIC_MINORS
 104         bool "Dynamic device file minor numbers"
 105         help
 106           If you say Y here, the minor numbers of ALSA device files in
 107           /dev/snd/ are allocated dynamically.  This allows you to have
 108           more than 8 sound cards, but requires a dynamic device file
 109           system like udev.
 110
 111           If you are unsure about this, say N here.
 112
 113 config SND_MAX_CARDS
 114         int "Max number of sound cards"
 115         range 4 256
 116         default 32
 117         depends on SND_DYNAMIC_MINORS
 118         help
 119           Specify the max number of sound cards that can be assigned
 120           on a single machine.
 121
 122 config SND_SUPPORT_OLD_API
 123         bool "Support old ALSA API"
 124         default y
 125         help
 126           Say Y here to support the obsolete ALSA PCM API (ver.0.9.0 rc3
 127           or older).
 128
 129 config SND_PROC_FS
 130         bool "Sound Proc FS Support" if EXPERT
 131         depends on PROC_FS
 132         default y
 133         help
 134           Say 'N' to disable Sound proc FS, which may reduce code size about
 135           9KB on x86_64 platform.
 136           If unsure say Y.
 137
 138 config SND_VERBOSE_PROCFS
 139         bool "Verbose procfs contents"
 140         depends on SND_PROC_FS
 141         default y
 142         help
 143           Say Y here to include code for verbose procfs contents (provides
 144           useful information to developers when a problem occurs).  On the
 145           other side, it makes the ALSA subsystem larger.
 146
 147 config SND_VERBOSE_PRINTK
 148         bool "Verbose printk"
 149         help
 150           Say Y here to enable verbose log messages.  These messages
 151           will help to identify source file and position containing
 152           printed messages.
 153
 154           You don't need this unless you're debugging ALSA.
 155
 156 config SND_DEBUG
 157         bool "Debug"
 158         help
 159           Say Y here to enable ALSA debug code.
 160
 161 config SND_DEBUG_VERBOSE
 162         bool "More verbose debug"
 163         depends on SND_DEBUG
 164         help
 165           Say Y here to enable extra-verbose debugging messages.
 166
 167           Let me repeat: it enables EXTRA-VERBOSE DEBUGGING messages.
 168           So, say Y only if you are ready to be annoyed.
 169
 170 config SND_PCM_XRUN_DEBUG
 171         bool "Enable PCM ring buffer overrun/underrun debugging"
 172         default n
 173         depends on SND_DEBUG && SND_VERBOSE_PROCFS
 174         help
 175           Say Y to enable the PCM ring buffer overrun/underrun debugging.
 176           It is usually not required, but if you have trouble with
 177           sound clicking when system is loaded, it may help to determine
 178           the process or driver which causes the scheduling gaps.
 179
 180 config SND_VMASTER
 181         bool
 182
 183 config SND_DMA_SGBUF
 184         def_bool y
 185         depends on X86
 186
 187 source "sound/core/seq/Kconfig"